The Permanent Court of Arbitration : new directions : Working Group on Improving the Functioning of the Court 13 May 1991, Peace Palace, The Hague. - The Hague : International Bureau of the Permanent Court of Arbitration, Peace Palace, 1991

The Permanent Court of Arbitration : new directions : Working Group on Improving the Functioning of the Court 13 May 1991, Peace Palace, The Hague. - The Hague : International Bureau of the Permanent Court of Arbitration, Peace Palace, 1991